JP6061236B2 - Steel plate holding device - Google Patents

Description

  The present invention relates to a steel plate fall prevention mechanism in a steel plate holding device using an electromagnet.

  For example, when a scaffold is bad at a construction site or the like, a large steel plate is laid there. Since such steel plates are very heavy, they are transported from the truck bed to the installation site by suspending them on a steel plate holding device connected to a power shovel or crane. A steel plate holding device to be transferred is used. This type of steel plate holding device is provided with a fall prevention mechanism for preventing the steel plate from dropping for safety.

  The above-mentioned fall prevention mechanism is designed to prevent the steel sheet from dropping when the engaging force of the electromagnet is not sufficient, for example, by locking the locking part to the lower edge of the steel sheet attracted by the electromagnet. At present, the fixing is not performed stably and firmly. If it falls, the work is delayed and it is very dangerous.

  An object of the present invention is to provide a steel plate holding device in which locking and fixing of a steel plate by a fall prevention mechanism is stably and firmly performed.

  In this invention, the upper part is connected to the actuator side, and an electromagnet that is attracted to the steel plate is provided on the lower surface side, and further, the steel plate is attracted to the lower edge of the electromagnet and is prevented from falling. In the steel plate holding device including the fall prevention mechanism, the fall prevention mechanism includes a driving body, a link operating body, and a locking body having a locking portion that locks to a lower edge of the steel plate, and driving the driving body. As the locking body moves up and down in conjunction with the folding operation of the link operating body, the locking portion is locked to the lower edge of the steel plate in a fixed state.

  According to the above configuration, when the link actuating body is folded by driving of the driving body, the locking body moves upward in conjunction with it, and the locking portion is locked to the lower edge of the steel plate and the steel plate is dropped. Is prevented. Since the operation of the fall prevention mechanism is performed with the driving of the driving body, the whole operation is stably performed without loosening, and further, the fall prevention mechanism is in a folded state by using the link operating body, It fits in a compact state when not in use.

  In particular, since the upward movement of the locking body is linearly performed along the guide body, the locking portion is firmly fixed so that the steel plate is pressed against the magnet from below, and the electromagnet is attracted. Even when the force is insufficient, the steel plate is stably supported without rattling, and does not slide down in the lateral direction.

  According to the steel plate holding device of the present invention, the locking and fixing of the steel plate is stably and firmly performed by the fall prevention mechanism, thereby improving both workability and safety in the steel plate transfer operation. In addition, there is provided a steel plate holding device convenient for use in which the entire operation of the fall prevention mechanism is stably performed without loosening, and the fall prevention mechanism is housed in a compact state when not in use.

  External perspective view of the steel plate holding device of the present invention   The perspective view of the fall prevention mechanism part of the steel plate holding device of this invention   The exploded perspective view of the fall prevention mechanism part of the steel plate holding device of this invention   The exploded perspective view of the principal part of the fall prevention mechanism part of the steel plate holding device of this invention   Operation explanatory diagram of the fall prevention mechanism of the steel plate holding device of the present invention   Operation explanatory diagram of the fall prevention mechanism of the steel plate holding device of the present invention   Operation explanatory diagram of the fall prevention mechanism of the steel plate holding device of the present invention   Operation explanatory diagram of the fall prevention mechanism of the steel plate holding device of the present invention   The connection block diagram of the base and turning mechanism of the steel plate holding device of this invention   Explanatory drawing of the usage pattern of the steel plate holding device of this invention

  FIG. 1 is an overall perspective view of a steel plate holding device. In the steel plate holding apparatus 100, reference numeral 1 denotes a base, a crane suspension portion 4 is attached to the upper portion thereof via a turning mechanism 2, and an electromagnet 5 attracted to the steel plate is attached to the lower surface side. The earth removal plate 7 is attached, and furthermore, drop prevention mechanisms 6 and 6 are provided on both ends of the base 1 to prevent the steel plate from dropping.

  2 is a perspective view of the fall prevention mechanism 6, and FIG. 3 is an exploded view thereof. 8 is a 1st rotation action | operation body, and each of a pair of base parts 9 and 9 is pivotally supported by each of a pair of fixed pieces 12 and 12 fixed to the base 1 integrally at pivot support positions 10 and 10, The upper part of the hydraulic cylinder 15 is a drive body pivotally supported on the upper part of the base 1 and is pivotally supported at a pivotal support position 14, 14 by a rod 17 integrated with the lower end of an operating body 16. Is provided.

  Reference numeral 18 denotes a second rotating operation body (guide body), which is configured such that a pair of rail members 19 and 19 are integrally fixed in a state where the rail portions 20 and 20 face each other. It is attached so that it can rotate by being pivotally supported by a pair of fixed pieces 12 and 12 of the base 1 at the pivotal support positions 24 and 24 of 22,22. Each of 41 and 41 is a fixing member for fixing the rail members 19 and 19 integrally.

  Reference numeral 28 denotes a first lever. A pair of lever pieces 30, 30 extend integrally from the rod 29, and the rod 29 is pivotally supported at pivot positions 25, 25 in the vicinity of the base portions 22, 22. Provided between the rail members 19, 19 of the second rotating operation body 18.

  Reference numeral 32 denotes a second lever, and 33 denotes a third lever, which constitutes a link operating body together with the first rotation operating body 8 and the first lever 28. FIG. 4 shows an exploded configuration of the first lever 28, the second lever 32, the third lever 33, and a locking operation body 50 to be described later. The upper end of the second lever 32 is a shaft support position 35 and the first rotation operation body. 8 is pivotally supported at the pivotal support position 11 at the distal end of the second lever 32, the pivotal support position 31 at the lower end of the second lever 32, the pivotal support position 38 at the proximal end side of the third lever 33, and the distal end of the first lever 28. The shaft support position 40 is pivotally supported so as to be rotatable integrally with each other.

  Reference numeral 50 denotes a locking actuating body provided with a locking portion 52 at its end, and two casters 54, 54... Are attached to the outer surfaces of the pair of side portions 53, 53, respectively. The casters 54, 54... Are accommodated in the rail portions 20, 20, respectively, and are accommodated in the second rotating operation body 18 so as to be linearly movable. The tip end side of the third lever 33 is pivotally supported at the pivot position 39 at the pivot position 37 at the pivot position 39 at the front portion of the locking operating body 8.

  FIG. 10 shows a usage state of the steel plate holding device 100. The steel plate holding device 100 is connected to the arm 102 of the power shovel 101 as an attachment and is used for transferring the steel plate.

  The operation of the fall prevention mechanism 6 will be described with reference to FIGS. FIG. 5 shows a state in which the fall prevention mechanism 6 is not used, and the rod 17 position A is positioned highest when the operating body 16 is most retracted into the hydraulic cylinder 15, and in this state, the first rotational operating body 8, The second lever 32 and the second rotation actuating body 18 are sequentially bent, whereby the fall prevention mechanism 6 is fully folded and is compactly stored in the space above the end of the base 1. S is a steel plate to be transferred, and is attracted and held on the lower surface of the electromagnet 5.

  As the hydraulic cylinder 15 is operated to extend the operating body 16 and the rod 17 position A is lowered, the bending of the first rotating operating body 8, the second lever 32, and the second rotating operating body 18 is extended. As shown in FIG. 6, the second rotating operation body 18 is positioned horizontally. In the state shown in FIGS. 5 and 6, the second lever 32 exerts a pulling force on the connecting shaft support B of the first lever 28 and the third lever 33, but a pair of latches provided on the third lever 33. The convex portions 34, 34 are pressed and positioned by a pair of pressing pieces 36, 36 integrally attached to the upper surface of the locking operation body 50, so that the linear form of the third lever 33 and the locking operation body 50 is achieved. Is maintained and the third lever 33 stays in the second rotating operation body 18, and the linear shape of the first lever 28 and the third lever 33 is also maintained.

  Further, as the rod 17 position A is lowered, the bending of the first rotation operating body 8, the second lever 32, and the second rotation operating body 18 is extended, as shown in FIG. The moving body 18 is positioned vertically. At this time, the locking actuating body 50 protrudes to the maximum from the second rotating actuating body 18, so that the locking part 52 is positioned below the lower edge of the steel sheet S attracted by the electromagnet 5.

  Further, as the rod A position A is lowered, the second lever 32 pushes the connecting shaft support B between the first lever 28 and the third lever 33 inward. As a result, the first lever 28 and the third lever 33 bend inwardly at the connecting shaft support B, and accordingly, the locking operating body 50 integrated with the third lever 33 rises in the second rotating operating body 18, The locking part 52 is locked to the lower edge of the steel plate S from below. At that time, the ascending movement of the locking body 50 is linearly performed along the second rotation operating body 18, so that the locking portion 52 presses the steel plate S against the electromagnet 5 from below, whereby the steel plate S is moved to the electromagnet 5. It is firmly attached and firmly fixed. The movement of the locking body 50 is smoothly performed by the presence of the casters 54, 54.

  FIG. 9 shows a connection structure between the base 1 and the turning mechanism 2. As shown in FIG. 1, the base 1 includes shaft support fixing portions 60 and 60 at opposite positions on both sides of the upper surface and shaft support fixing portions 62 and 62 at positions facing both ends. On the other hand, the shaft support fixing portions 64 and 64 and the shaft support fixing portions 66 and 66 are provided at positions corresponding to the lower surface of the turning mechanism 2, and are supported at the respective positions so as to be slidably connected to each other. Yes. The shaft support holes 70, 70 in the shaft support fixing portions 66, 66 are elongated holes in the vertical direction, and thereby the shaft support positions of the shaft support fixing portions 60, 60 and the shaft support fixing portions 64, 64 are centered. The base 1 is moved in a stable manner within an allowable range.

DESCRIPTION OF SYMBOLS 1 Base 5 Electromagnet 6 Fall prevention mechanism 8 1st rotation action body (link action body)
S Steel plate 15 Drive body and 28 1st lever (link actuating body)
32 Second lever (link actuator)
33 Third lever (link actuator)
DESCRIPTION OF SYMBOLS 50 Locking body 52 Locking part 100 Steel plate holding device S Steel plate

Claims (1)

An anti-falling mechanism that includes an electromagnet that is attached to the steel plate on the lower surface side and has an upper portion that is coupled to the actuator side, and that is further locked to a lower edge of the steel plate that is attracted to the electromagnet to prevent the steel plate from falling In a steel plate holding device comprising:
The fall prevention mechanism includes a driving body, a link operating body, and a locking body provided with a locking portion that locks to a lower edge of the steel plate, and the locking body of the link operating body is driven by the driving body. In conjunction with the folding operation, the locking part moves linearly up and down along the guide body, and the engaging part is fixed to the lower edge of the steel plate while pressing the steel plate against the electromagnet from below along with the upward movement. A steel plate holding device characterized by stopping .

Images